Mounting mechanism of wheel cap

Abstract

A mounting mechanism of a wheel cap includes engaging claws arranged on a wheel cap body of the cap, a flexible ring arranged on the body while contacting with the inner side of each of the claws under pressure, a closing lid arranged on the body, and a projection arranged on the lid. The urging force of the ring applies on the radial inner surface of each claw. The lid is moved between a ring mounting position and a ring releasing position. The projection contacts with the free ends of the ring in the ring mounting position of the lid. Each claw engages with a hump portion of a disc wheel so that the cap is mounted on the disc wheel to be capable of being dismounted therefrom.

What is claimed is: 
     
       1. A mounting mechanism of a wheel cap comprising: engaging claws arranged at specified portions of a rear surface of a wheel cap body of the cap;   a flexible ring arranged on the rear surface of the body and on the inner side of each claw in a radial direction of the body for applying an urging force thereof on the inner surface of each claw while said ring contacts with the inner surface thereof under pressure, said claws being outwardly pressed in a radial direction of said ring by the urging force;   a closing lid for moving between a ring engaging position where said lid closes into engagement with free ends of said ring and a ring releasing position where said lid is away from the free ends of said ring; and   a projection arranged on a rear surface of said lid and contacting with free ends of said ring in the ring engaging position of said lid so that said projection maintains the urging force on said flexible ring in the engaging position   whereby said claws engage with a hump portion of a disc wheel so that the cap is mounted on the disc wheel to be capable of being dismounted therefrom.   
     
     
       2. A mounting mechanism of a wheel cap as claimed in claim 1, wherein said lid functions as a valve cover for a valve sealing cap of a tire. 
     
     
       3. A mounting mechanism of a wheel cap is claimed in claim 1, wherein said projection comprises a spring member, one end of which is fixed to the rear surface of said lid and the other end of which is capable of bending with respect to the fixed end of the spring member and coming in contact with the free end of said ring, and allows a bias force thereof to act on the free ends of said ring in a circumferential direction of said ring with which said projection contacts. 
     
     
       4. A mounting mechanism of a wheel cap as claimed in claim 2, wherein said projection comprises a spring member, one end of which is fixed to the rear surface of said lid and the other end of which is capable of bending with respect to the fixed end of the spring member and coming in contact with the free end of said ring, and allows a bias force thereof to act on the free ends of said ring in a circumferential direction of said ring with which said projection contacts.